/// <summary>
/// Handles the <see cref="Selector.SelectionChanged"/> event for the "Variables" <see
/// cref="ListView"/> on the <see cref="VariablesTab"/> page.</summary>
/// <param name="sender">
/// The <see cref="Object"/> where the event handler is attached.</param>
/// <param name="args">
/// A <see cref="SelectionChangedEventArgs"/> object containing event data.</param>
/// <remarks>
/// <b>OnVariableSelected</b> updates the "Value" control with the data of the first
/// selected item in the "Variables" list view.</remarks>
private void OnVariableSelected(object sender, SelectionChangedEventArgs args)
{
args.Handled = true;
if (!this._initialized)
{
return;
}
// retrieve selected variable entry, if any
decimal value = 0m;
int index = VariableList.SelectedIndex;
if (index >= 0)
{
// update numeric control with variable value
VariableListItem item = (VariableListItem)VariableList.Items[index];
if (item.Target == null)
{
value = VariableClass.ParseUnscaled(item.Value);
}
else
{
ModifierTarget target;
if (!VariableClass.TryParseUnscaled(item.Value, out value, out target))
{
Debug.Fail("OnVariableSelected: TryParseUnscaled failed.");
}
Debug.Assert(target == item.Target.Value);
}
}
VariableUpDown.Value = value;
}
/// <summary>
/// Creates a new item for the "Variables" <see cref="ListView"/> on the <see
/// cref="VariablesTab"/> page, containing the specified <see cref="VariableClass"/>
/// identifier and associated modifier value for the specified <see cref="ModifierTarget"/>.
/// </summary>
/// <param name="id">
/// The <see cref="VariableClass.Id"/> string of a <see cref="VariableClass"/>.</param>
/// <param name="target">
/// A <see cref="ModifierTarget"/> value indicating which modifier value to add.</param>
/// <returns>
/// The new <see cref="VariableListItem"/> if one was created and added to the "Variables"
/// <see cref="ListView"/>; otherwise, a null reference.</returns>
/// <remarks>
/// <b>CreateVariableItem</b> immediately returns a null reference if the specified
/// <paramref name="id"/> is not found in the currently selected default <see
/// cref="VariableModifierDictionary"/>, or if the element that matches the specified
/// <paramref name="id"/> does not define a modifier value for the specified <paramref
/// name="target"/>.</remarks>
private VariableListItem CreateVariableItem(string id, ModifierTarget target)
{
if (this._defaultVariableModifiers == null)
{
return(null);
}
// get default modifier if present
VariableModifier defaultModifier;
if (!this._defaultVariableModifiers.TryGetValue(id, out defaultModifier))
{
return(null);
}
// get value for specified target, if any
int?defaultValue = defaultModifier.GetByTarget(target);
if (defaultValue == null)
{
return(null);
}
// add current modifier if necessary
VariableModifier currentModifier;
if (!this._currentVariableModifiers.TryGetValue(id, out currentModifier))
{
currentModifier = (VariableModifier)defaultModifier.Clone();
this._currentVariableModifiers.Add(id, currentModifier);
}
// format variable as modifier value
int?currentValue = currentModifier.GetByTarget(target);
VariableListItem newItem = new VariableListItem(id,
VariableClass.FormatUnscaled(currentValue, target),
VariableClass.FormatUnscaled(defaultValue.Value, true), target);
ItemCollection items = VariableList.Items;
for (int i = 0; i < items.Count; i++)
{
VariableListItem item = (VariableListItem)items[i];
// sort alphabetically, with basic values before modifiers
if (String.CompareOrdinal(item.Id, newItem.Id) > 0)
{
items.Insert(i, newItem);
return(newItem);
}
}
// append to end of list
items.Add(newItem);
return(newItem);
}
/// <overloads>
/// Creates a new item for the "Variables" <see cref="ListView"/> on the <see
/// cref="VariablesTab"/> page, containing the specified <see cref="VariableClass"/>
/// identifier and associated value.</overloads>
/// <summary>
/// Creates a new item for the "Variables" <see cref="ListView"/> on the <see
/// cref="VariablesTab"/> page, containing the specified <see cref="VariableClass"/>
/// identifier and associated basic value.</summary>
/// <param name="id">
/// The <see cref="VariableClass.Id"/> string of a <see cref="VariableClass"/>.</param>
/// <returns>
/// The new <see cref="VariableListItem"/> if one was created and added to the "Variables"
/// <see cref="ListView"/>; otherwise, a null reference.</returns>
/// <remarks>
/// <b>CreateVariableItem</b> immediately returns a null reference if the specified
/// <paramref name="id"/> is not found in the currently selected default <see
/// cref="VariableValueDictionary"/>.</remarks>
private VariableListItem CreateVariableItem(string id)
{
if (this._defaultVariables == null)
{
return(null);
}
// get default value if present
int defaultValue;
if (!this._defaultVariables.TryGetValue(id, out defaultValue))
{
return(null);
}
// add current value if necessary
int currentValue;
if (!this._currentVariables.TryGetValue(id, out currentValue))
{
currentValue = defaultValue;
}
// format variable as basic value
VariableListItem newItem = new VariableListItem(id,
VariableClass.FormatUnscaled(currentValue, false),
VariableClass.FormatUnscaled(defaultValue, false), null);
ItemCollection items = VariableList.Items;
for (int i = 0; i < items.Count; i++)
{
VariableListItem item = (VariableListItem)items[i];
// sort alphabetically, with basic values before modifiers
if (item.Id == newItem.Id || String.CompareOrdinal(item.Id, newItem.Id) > 0)
{
items.Insert(i, newItem);
return(newItem);
}
}
// append to end of list
items.Add(newItem);
return(newItem);
}
/// <summary>
/// Resets all current values in the "Variables" <see cref="ListView"/> on the <see
/// cref="VariablesTab"/> page to their default values.</summary>
/// <remarks>
/// <b>ResetVariables</b> copies the "Default Value" column to the "Value" column for all
/// items in the "Variables" list view, and then reselects the currently selected item to
/// update all other controls.</remarks>
private void ResetVariables()
{
if (VariableList.Items.Count == 0)
{
return;
}
// reset all current values to their default values
for (int i = 0; i < VariableList.Items.Count; i++)
{
VariableListItem item = (VariableListItem)VariableList.Items[i];
item.Value = item.DefaultValue;
}
VariableList.Items.Refresh();
// reselect current selection to update other controls
int index = VariableList.SelectedIndex;
VariableList.SelectedIndex = -1;
VariableList.SelectAndShow(Math.Max(0, index));
}
